ported vacuum switch

Discussion in 'Wrenchin' Secrets' started by Gold GS, Jun 18, 2018.

  1. Gold GS

    Gold GS Active Member

    Hi Everyone, I found what looks like a broken ported vacuum switch on my intake manifold. There are no vacuum hoses going to it and the top looks like there was a plug that goes into it. (it's broken now). Does anyone know what the function of this part is and where to the vacuum lines go? Thanks for any help in advance.
     
  2. Gold GS

    Gold GS Active Member

    The car is a 1972 Buick GS 350
     
  3. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    Part of the TCS Emissions control. Bottom line is you do not need it. The engine will run better without it.

    TCS System.jpg
     
  4. Gold GS

    Gold GS Active Member

    Thank you Larry. I'll just put some plugs on the two vacuum ports.
     
  5. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    No need, there's no vacuum there unless it is hooked up to the vacuum. That switch sits in a coolant passage. Better yet, pull the whole switch and put a gauge sender for temperature in there.
     
    Last edited: Jun 18, 2018
  6. Gold GS

    Gold GS Active Member

    Thanks again Larry, I'll take your advice.
     

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